<template>
  <div class="city">
    <city-header></city-header>
    <city-search :cities="cities"></city-search>
    <city-list :hotCities="hotCities" :cities="cities" :letter="letter"></city-list>
    <city-alphabet :alphabetList="alphabetList" @change="handleLetterChange"></city-alphabet>
  </div>
</template>

<script>
import axios from 'axios'
import CityHeader from './components/Header'
import CitySearch from './components/Search'
import CityList from './components/List'
import CityAlphabet from './components/Alphabet'

export default{
  name: 'City',
  components: {
    CityHeader,
    CitySearch,
    CityList,
    CityAlphabet
  },
  data () {
    return {
      hotCities: [],
      cities: {},
      letter: ''
    }
  },
  methods: {
    getCityInfo () {
      axios.get('/api/city.json').then(this.cityInfoSucc)
    },
    cityInfoSucc (resp) {
      if (resp && resp.data && resp.data.ret) {
        const data = resp.data.data
        this.hotCities = data.hotCities
        this.cities = data.cities
      }
    },
    handleLetterChange (letter) {
      this.letter = letter
    }
  },
  computed: {
    alphabetList () {
      const alphabetList = []
      for (const key in this.cities) {
        alphabetList.push(key)
      }
      return alphabetList
    }
  },
  mounted () {
    this.getCityInfo()
  }
}
</script>

<style lang="stylus" scoped>

</style>
